[i2c] [PATCH 5/7] of/gpio: implement of_dev_gpiochip_{add, remove} calls

Anton Vorontsov avorontsov at ru.mvista.com
Fri Oct 17 23:13:14 CEST 2008


On Fri, Oct 17, 2008 at 01:25:01PM -0700, David Brownell wrote:
> On Thursday 16 October 2008, Anton Vorontsov wrote:
> > +       if (of_gc->chip)
> > +               return of_gc->chip;
> > +       return &of_gc->gc;
> 
> presumably there's a reason not to
> 
> 	of_gc->chip = &of_gc->gc;

Yes, there are two reasons:

1. I need some place to insert the huge comment, which you snipped. ;-)

2. I didn't want to break current users. That is, the line you purpose
   ("of_gc->chip = &of_gc->gc;") should be inserted to every of_gpio
   controller. Most of them use of_mm_gpiochip_add(), so these are easy.
   But some (mcu_mpc8349emitx.c) are doing things by themselves.

Thanks,

-- 
Anton Vorontsov
email: cbouatmailru at gmail.com
irc://irc.freenode.net/bd2



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